Question about 1990 Toyota 4Runner

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EFI Short I was driving down the Highway when suddenly my truck died ! I found that the fuse for the EFI had blown. I put in another and it blew again and again and again! What would cause this it just started for no reason and i cannot figure it out ! Please help.. Thank You

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My Toyota 4-Runner did the exact same thing and we found that the wire harness for the O-2 sensor fell onto the catalytic converter and melted causing it to groung out and blow the EFI fuse. Repaired the wires and no problems!

Posted on May 27, 2009

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If you didn't mess with the wiring (cause some people do) you have a short to ground somewhere. basically you have to follow the power flow until you lose power and the short is going to be between the last spot you tested that had power (battery voltage) and the spot were you lost power. hope this helps

Posted on Mar 09, 2009

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